Adjustable finger ring or the like



Jan. 1966 M. SILVERMAN 3,223,208

ADJUSTABLE FINGER RING OR THE LIKE Filed April 5, 1965 BYM 4% United This invention relates to finger rings, and in particular to a finger ring which is adjustable as to size. The invention may be used for like objects such as bracelets etc. The present application is a continuation-in-part of application S.N. 273,035 filed by the same applicant, on April 15, 1963, now abandoned.

An important object of the invention is to provide a finger ring which may be adjusted in size to fit one of a plurality of fingers of difierent sizes.

Another important object of the invention is to provide a one-piece, expansible and contractible finger ring which does not require soldering for adopting it to a required size for a particular finger.

Another object of the invention is to provide an adjustable and easily manipulated shank for such a ring.

Still another object of the invention is to provide such a finger ring which may be easily passed over the finger knuckles and readily contracted on the finger proper.

Yet another object of the invention is to provide a finger ring which will not slide around the finger and which will permit its mounting to remain in the position chosen by its wearer.

These and other important objects of the invention will become apparent from the following description when read in connection with the accompanying drawings which illustrate the preferred embodiments of the invention.

It is to be understood, however, that various changes in the details, shapes and proportions of the disclosed embodiments may be made, without departing from the scope or spirit of the invention.

In the drawing:

FIG. 1 is a perspective view of the ring assembly,

FIG. 2 is a cross-section view through line 22 of FIG. 1,

FIG. 3 is a cross-section view through line 33 of FIG. 2,

FIG. 4 is an exploded view of the parts comprising the invention and FIG. 5 is a cross-section view on line 5-5 of FIG. 2.

Referring now to the drawing in detail, the adjustable finger ring assembly comprises an elastically contracted split annulus or shank 14 of a springy resilient metal or alloy, secured to an upper member 16 having a concave surface 22, by a weld or soldering 50 and a lower convex member 18. The upper member 16 serves as a mounting for a stone 20. The upper member 16 is formed with a groove 17 having a wide arcuate end 24 and a narrow arcuate end 26. Upper member 16 is also provided with recesses 28. The lower member 18 has a convex surface of the same shape as the concave surface 22 and is provided with protrusions 32 adapted to engage in recesses 28. The lower member 18 is further provided with an arcuate groove 34 having a wide end 36 and a narrow end 38. The bottom of the groove 34 is formed with teeth 40 having extremities 41. Shank 14 is formed with a narrow end 42 and an enlarged flattened out portion 44 provided with a hole 46, defined by an edge 47, adapted to receive a ball 48.

The diameter of ball 48 is slightly larger than that of hole 46, so that this ball can not pass through the hole. The ball is thus held between the edge 47 of the flattened tates Patent 0 out end portion 44 and a pair of preselected teeth 40 by the downward force exerted by the annulus and its end portion 44. The space between the innermost part of groove 17 and the extremities 41 of the teeth 49 is slightly wider than the diameter of the ball 48, thus making possible the displacement of the ball along said space when counterpressure is applied against the downward force exerted by the annulus. The end portion 44 may thus be locked by means of ball 48 with any desired pair of teeth 40 by first applying such counterpressure against the annulus and then moving the annulus in either direction to contract or expand it, depending on the desired size of the ring, and then releasing such counterpressure thus allowing the end portion 44 to snap downwardly.

To assemble the ring during manufacture, the ball 48 is held between the edge 47 of the hole 46 of the enlarged end portion 44 of the split annulus and any of the pairs of teeth 40.

The upper member 16 is next soldered to the lower member 18 so that the wide end 24 is aligned with the Wide end 36 and the narrow end 26 With the end 38, while projections 32 mate with holes 28. The end of shank or annulus 42 is inserted in the wide end 36 of groove 34 and soldered to the upper member 16 at this wide end, as shown in FIG. 2.

It will be appreciated that since the end 44 of the shank is wider than the narrow end of the groove 38, end 44 can not be removed from the groove thus precluding the possibility of losing the ring.

The invention having thus been described, what is claimed and desired to be secured by Letters Patent of the United States of America is:

An adjustable finger ring comprising an upper member having a concave surface formed with guide holes, a lower member secured to said upper member, said lower member having a convex surface mating with said concave surface and provided with a longitudinally extending groove having a wide end and a narrow end, said lower member having guide pins received in said guide holes, transversely disposed teeth formed in said groove and projecting in a direction radially outwardly thereof, said concave surface and said groove defining a channel of predetermined height therebetween, a split ring shank of resilient material having a narrow end portion secured to said members adjacent the wide end of said groove, said shank extending exteriorly therefrom and having its other end flattened out and forming a laterally enlarged portion provided with a radial hole, said laterally enlarged portion being wider than the maximum transverse dimension of said groove narrow end and slidably secured in said groove narrow end, and a ball element having a diameter slightly larger than that of said hole, said ball being held seated in said hole and urged against adjacent ones of said teeth by the resilience of said shank.

References Cited by the Examiner UNITED STATES PATENTS 168,855 10/1875 Thomson 63-11 1,075,673 10/1914 Segman 6315.6 2,583,786 1/1952 Marzucco. 2,640,242 6/ 1953 Weimer 24-206 2,763,140 9/1956 Lutrario 6315.7

FOREIGN PATENTS 91,640 11/ 1921 Switzerland.

RICHARD C. PINKHAM, Primary Examiner. F. BARRY SHAY, Examiner, 

